import java.util.Scanner;

public class Selflearn_3 {
    public static void main(String[] args){
        Scanner in=new Scanner(System.in);
        int price=0;
        int amount=100;
        System.out.print("请输入票面：");
        amount=in.nextInt();
        System.out.print("请输入金额：");
        price=in.nextInt();
        System.out.println(amount+"-"+price+"="+(amount-price));
    }
}
